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How to restrict root remote login so that ordinary users have root privileges

2022-07-27 17:53:00 【51CTO】 


 demand   Limit rootu Remote login   Only ordinary users are allowed to log in 

 Use su  、 sudo  To achieve 


     
    
      
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 First, create ordinary users 
useradd user1   Create a user 
passwd  user1   Create a password 

     
    
      
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 Then open the file definition User_Alias
visudo     Execute the command     As shown in the figure 

     
    
      
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How to limit root Remote login , Make ordinary users own root jurisdiction _ssh

 Then specify rules    As shown in the figure 

     
    
      
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How to limit root Remote login , Make ordinary users own root jurisdiction _ Open file _02

 Save and exit 
 verification 
su - user1      Verify switching users 
sudo su -       After switching, switch back to root

     
    
      
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 Then limit root Unable to perform remote login 
vim /etc/ssh/sshd_config     Open file  
 Search for keywords Root Find the line in the figure   As shown in the figure   Set to disable root Perform remote login 

     
    
      
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How to limit root Remote login , Make ordinary users own root jurisdiction _ Ordinary users _03

 restart ssh  service 
systemctl restart sshd    

     
    
      
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 Restart and then use the remote tool root Log in  （ Remote tools such as xshell putty etc. ）
 You cannot log in at this time   Use the user1  Log in 
 Execute a command casually after logging in    Such as ls   Found that the authority is not enough 
 At this time, I don't know root How to use the password under the premise of 
 Use su  、 sudo  To achieve 


     
    
      
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sudo su - root   perform    You can switch the verification    Whether the command can be used    As shown in the figure 

     
    
      
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How to limit root Remote login , Make ordinary users own root jurisdiction _ Open file _04

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